51660412 has 12 divisors (see below), whose sum is σ = 91888216. Its totient is φ = 25406640.

The previous prime is 51660409. The next prime is 51660431. The reversal of 51660412 is 21406615.

It is a hoax number, since the sum of its digits (25) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 105618 + ... + 106105.

Almost surely, 2^51660412 is an apocalyptic number.

It is an amenable number.

51660412 is a deficient number, since it is larger than the sum of its proper divisors (40227804).

51660412 is a wasteful number, since it uses less digits than its factorization.

51660412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 211788 (or 211786 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 51660412 is about 7187.5177912823. The cubic root of 51660412 is about 372.4368302712.

The spelling of 51660412 in words is "fifty-one million, six hundred sixty thousand, four hundred twelve".